| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | number of [noun] [verb] | 4652 |
|
| 2 | number of [noun] [vb pp] | 1707 |
|
| 3 | [noun] of [noun] required | 519 |
|
| 4 | number of [noun] require | 89 |
|
| 5 | number [prep] [noun] required | 81 |
|
